Revert "[S3C-PWM] Added clock enabling during pwm_probe."

This reverts commit dfbb1db7408ec201186bac8b8b3c68499d23f6d7.
[WAVE2] Fixed LCD type detection. It's dependent on HWREV.
[S3C-PWM] Moved inversion bit setting to the pwm_config.

PWM module needs to be clocked while setting is performed.